[jdk17u-dev] RFR: 8256811: Delayed/missed jdwp class unloading events [v3]

[Andrew Dinn]

> Backport of patch to fix class unloading event notification.
> 
> This backport was originally developed by @zhengyu123 and involved some minor changes to the original patch.
> 
> n.b. the original patch required a follow up fix (cf JDK-8290908) which also needs backporting after this has been included.

Andrew Dinn has updated the pull request incrementally with one additional commit since the last revision:

  remove unnecessary cast change

-------------

Changes:
  - all: https://git.openjdk.org/jdk17u-dev/pull/635/files
  - new: https://git.openjdk.org/jdk17u-dev/pull/635/files/25678462..6277d1ee

Webrevs:
 - full: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=635&range=02
 - incr: https://webrevs.openjdk.org/?repo=jdk17u-dev&pr=635&range=01-02

  Stats: 1 line in 1 file changed: 0 ins; 0 del; 1 mod
  Patch: https://git.openjdk.org/jdk17u-dev/pull/635.diff
  Fetch: git fetch https://git.openjdk.org/jdk17u-dev pull/635/head:pull/635

PR: https://git.openjdk.org/jdk17u-dev/pull/635